I can't seem to find any specific troubleshooter for the tinker board. I can't get it to display, in fact I'm not even really sure it's booted. I put the tinker os on a Samsung MicroSDXC Evo Plus 128 gb. I got a power supply that was supposedly compatible with the tinker board. It seems to power on, there's a red and green light. I'm not sure where to go from here.